Manchester City secured a ticket to Carabao Cup final spot after Sergio Aguero scored the only goal to beat the League One side Burton 1-0.
City will now face Chelsea or Tottenham in the final next month.
Guardiola said: ‘Protect the habit – the habit of getting into the final.
‘I know it’s a competition, with all respect, that when you win and you are in the final you are so happy, but when you’re out you’re not sad.
‘But once we are there, we take every game seriously and we are in the final. We won already one title this season, the Community Shield. We are in the final and we are of course going to try to win it.’
The pitch was kept covered until around two hours before kick-off to protect from frost, but with the temperature around zero degrees, Guardiola still felt conditions were difficult.
Guardiola, who fielded a mixture of young and experienced players, said: ‘In winter time, freezing, the pitch was dangerous. Some mistakes were made at the back were because it was slippery. It was not stable. It was risky but everyone finished good.’
Burton put up more of a fight than in their first leg hammering at the Etihad Stadium and manager Nigel Clough felt ‘a lot’ of pride in their performance.
Clough, a former City player, said: ‘For a League One team to cause them as many problems as Premier League teams do – I know they had some young players playing but they still had enough big hitters out there.
‘We got about them a bit and I’m just a bit disappointed we didn’t get the goal we could have had.’
Clough admitted the pitch was difficult.
‘It did get a bit crispy towards the end,’ he said. ‘I think they were wondering when we were going to turn the undersoil heating on!’